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From: Raj Kamal on 14 Jul 2010 13:39
Iam finding out correlation between two images using the following command

correlation = fftshift(real(ifft2(conj(fft2(double(sub_image_1))).*fft2(double(sub_image_2)))));


then finding out the peaks of the correlation field.

Why the peaks are always at integral x,y???

Ne knows please help me.

With regards
Raj
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Next: Question about ldl factorization : can it be "out-of-cored"?